Shuttle-checking mechanism for looms.



l Patented Apr. 8,1913. 2 SHEETS-SHEET 1.

C. H DRAPER & J. NORTHROP.-

' SHUTTLE CHECKING MECHANISM FOR LOOMS. APPLIQA TI ON FILED FEB. 1611911. 1,058,292.-

- mentors CZa reHD/zz Jcr QM. m X mm. 4 A r a witness es:

0. H. DRAPER & J. NORTHROP. SHUTTLE CHECKING MECHANISM FOR LQOMS.

APPLICATION FILED FEB. 16, 1911.

Patented Apr. 8, 1913.

2 SHEETS-SHEET 2.

limeenn and the United ipensle, in the eennty lite EvZlHSSi-RClUASGttS,i improvement in Shuttle enanism 301 Looms of which 6e- "pini n ineenneotion l ii-Wings, is

n the drawings "1 liei'einei ter described more particularly to A prepeipesitioning of stint it is pie reel n the opposite sine at: theimportance of thee insuring groper hex 11g f the shuttle in a commonloein is well 11ml XTl by those the 213m and failure in this i'eg'etd:1v recognized sen {'08 of warp laresl: u iile nncl xpen In filling reing loon'is, tee iin' nnrtenee of prop neg shuttle becomes einplmsizecl"is-e no in positive for the action of nis 11g: mechanism either replenbreakage oceui, en of e loom, th om one snut- .e (0.11 ene in the senseit would H be as the lay sition in its forward moveof the cloth. It is l:ewn to those familiar art, that owing to one 01' may: eat n t, 2.causes, the operation of the lean: \eries and the effective-action of 1epicking means on the shuttle is not tmiam, Hi 1 the shuttle does not tnresult teat 'e vs enter the shuttle box 'et the opposite e of the 10011)when tlieiley is in the same position of its forward 'mwementn If, for Ilance, the pick is e- Week one or relatively nen-efiective, the shuttlewill ente'f the opposite box relatively later in the forward movement ofthe lay; While, on the other hand, if the pick is relatively strongefiective the shuttle will entepthe opp0- site be relatively earlier inthe forward eement of the lay. 111 the first case the tle may not fullyenter the sex in eppw end PIITPOSQS theiprovision st'erting forward; andFig to the usual r, WhEEL'QZLS in the v.

ACQREGRATIQH' 532" Elli-1131B.

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in both loom.

flYith the above generally stated in V18??? tlie present inventionlnisfor its aims of means Whereby to apply to the shuttle as it enters thebox, achecking action proportional to the picldngenergy oi momentum ofthe shuttle and to issue proper bexine: 0f the shu tle flVlEili-QZfl"the pesition of the lay wl'ien "he slinttleenters the box, all of whichwill here lllfifC-l" more fully appear, anal be clefinitelv painted outby the olaiins I In the drawn s which illustrate a con venient time ofmeans for carrying the invention into preotieel etfect,-Figure 1represents 111 plan View sutlicient of the front'po'aftion oi loom toinzike clear the use of the gresent invention; Fig? is it sec-- tion. online 53 -2 lllg. *1, showing nne form 01" the invention and the positionat the parts when the ley is in full forward position; Fig. 3 is aVlfi'W similar to that of Fig" 2 showing the relation-of parts when thelaw is in substantially rear positien s ncl 4; is e similar View skewingthe lay in center position, the full lines indicating the lay as movingforward. and. the tlottetl lines as moving reei ward.

The leoni frame 1, the breast teem the lay 3 and its mounting, the crank.Sln 4, t-he'cl'ank 5., and the connecting rod -6 jun ing the crank andlaynleff be of, any 1152131 or desired form and construction. The lay 3maybe previklecl with usual shuttle boxes 7 one at each aid of the lay,as indicated in Fig. 1. showm the shuttle boxes are-each provided with afixed front wall 8 a rear binder 9 which is pivoted at its outer end 10to the lay or one of its adjunc but it is to be understood that theinven' In the particular construction 95 tion is not re--109 stricted inthese respects and that the shuttle sexes may be variously modifiedWithin the true scope of the lnv'entlon. The floor or lower Wall of eachshuttle box 13 shown as having a slot 11 for the passage of the pickerstick 12, Fig. 1, which by its movement longitudinally ot the 'laycausesthe picker 13 to act upon and throw or pick the shuttle l iall as is1510111111011 undefined )bvw ly;

the present in-' an ing side will be provided with the usual exit forthe filling carrier, but as thisisold and Fig. 1, having a dagger 17,under certa-in tact with the bunter 18 connected t'o the knock-off lever19, pivoted at 20 to thebreast beam 2, the-other end of said knock-offlever being disposed to bear upon the shipper its usual holding notch 22to cause loom stoppage,- as will be fully .understood by those skilledinthe art. The protector rod 16 is normally under the control of'aspring 23, Fig. 1, one end of which is secured to the rod by a collar 24and the other end wherebf is secured to one of the bearings 15, theconstruction being such that said spring nor mally acts to raise thedagger, when the latter is free to respond to the demands of the spring,and placethe end thereof in position I to contact with the bunter 18 onthe forv ward movement of the lay.

Secured to the lay adjacent each shuttle box is a bracket 25, to eachofwhich is pivotally connected a device to act upon the adjacent shuttlebinder to check the shuttle as it enters the box. This device may forconvenience of identification be herein termed the shuttlechecking-pressure trans mitter, and in the form shown it comprises afinger 26, the upper end of which is adapted to bear upon the adjacentbinder, and an arm .27 extending beneath the lay. Sa1d thereof, theconstruction being such thatshould ashutt-le be roperly boxed in oneof.- the shuttle boxes, t e finger 26 of' the ad a- IY fcent shuttlechecking-pressure transmitter would befmoved backward turning about theaxis 28, raisingthe arm 27. and, through the toe 29, turningthe'protector shaft to depress the dagger 17 sothat on the forwardv Imovement of the lay, the end oflthedagger Will not contact .withthetbunter. Should,

however, the shuttle not enter the boxsufli- I ciently to move theadjacent finger 26ba'ckward as described, the arm 27 will not'ilift thetoe 29, arid on the forward movemgnt of the lay the dagger will contactnth th e-bun- I ter, and cause'loom stoppage. I

.. It is not essential to the present invention that the protector rod,dagg er, and hunter I be arranged in the partlcular' relation stated,nor that the rod. be dzrectly under the well known, its detail showingand descripconditions to be described adapted to conhandle 21, Figs. 1and'2,'and detach it from shuttle checklng pressure transmitters, I

30, is. preferably, though not of necessi pressure arm, and since thearms and their .be the same, a

.wise' unsupported. The rod 35 passes up finger and arm are connected tomove in '30- secured to' the shuttle checking-pressure;

- und/er and lifts or, supports the weight of the pressure arm. When thelay is nearer its control of the shuttle checking-pressure transmitter,because the only essential with relation to the dagger and itscooperating parts is that when ashuttle is' properly boxed as the'laybeats up the loomwill not kn ck-off, but when a shuttle fails to box,and lvarp breakage is liable to occur by reason thereof, that the dagger'will'be positioned to knock-off the'loom asthe lay heats up.-Obviously, this'efleot can be vari a5: ously secured and, broadlyspeaking, is'not' new, so that any appropriate devices may be employed"without departing from the true scope of the invention, aswi ll laterappear.

Depending from the arm'27of each of th atyeach side of the loom, is ahanger 30, T r'ying a pin 31 and a roll 32.. This haI jr" made'integralwith its arm 27. Pivota mounted on eachside of the m frame a 33 is anarm 34,-which for convenience of; identification may be herein referredto as a? operations on opposite sides of the loo'mmay description of onewill be suflicient. The pressure arm 34- 'extends' forwardfrom itspivotal support 33, and atgits front 'end engages asupporting andadjusting rod 95" 3,5. In the form of the invention illustrated,

the rod 35 passes through aperforation' in the enlarged end 36 of thepressure arm, and f has a head 3'Z, 0n which the end of the pres surearm may rest when said arm is other-' wardfthrough a bracket secured tothe I loom fra me, and-isprovided with Sua ue I adjusting means foradjusting the position of the head 37 and Derforcethe height: at 5 whichthe-end of thefpressure arm 34: may be held for a purpose that willpresently appear. In the form ofthe device illustrated I by Figs. 1 to 4inclusive, the jadjustability of the head 37 secured by a nut 39 screwthreaded upon the rod 35 and the top of'the bracket 38.

A spring 40 surrounds the-rod 35 to cushion the upward movement of thepressure arm 34k, said spring being preferably sustained'in positionfrom the under side of the bracket 38, as indicated by Figs. 2, 3, and4. The under surface of the arm 34 is disposed above the pin 31 androll32 of the hanger I I I resting upon transmittenthe partsbeing so related1; during a portion of the backward and f ward movement of the lay, theroll32 rides rear position, the roll'.32 sustains the weight of thepressure arm 34 at a point nearer the pivot 33 of said arm, with theresult thattheweight or gravity of the pressure arm acting I upon theshuttlechecking-pressure trans is ice ' masses with greater leveragetransmits to the binder 9 i s greater pressure- As the lay moves forwardthe roll travels along" the under surface of the pressure arm 34%there-- by constantly diminishing the leverage of" the pressure armupon'the transmitter.

Bearing in mind that the shuttle will reach the box at the opposite sideof the loom a time in the forward movement. of the lay dependent uponthe power or energy or the pick, and that under a weak pick the shuttlewill enter the opposite box later and under a relatively strong pickwill enter erget-ic checking action.

the box earlier, it will be seen that the device described presentsmeans that will act-upon the shuttle to check the same with a forceproportional to the force of the pick or mo mentum of the shuttle.Should the shuttle be driven across the lay with great energy, it willreach the opposite box sooner and when the lay is nearer its rearposition, but at such time the pressure arm through the shuttlechecking-pressure transmitter is act- 'ing upon the binder with greaterenergy, so

that the highly energetic shuttle as it enters the box is met by acorrespondingly highly energetic checking action of the binder with theresult that it is stopped and boxed in proper position. On the otherhand should the shuttle be driven across the lay with less energ Y or bya so called weak pick it will reach the opposite box more'ta-rdily and ywhen the lay is. farther forward, At such time, however, the pressurearnn is acting upon the binder through the shuttle check ing-pressuretransmitter with less\pres sure,; so that the less energetic shuttlea'siit enters the box is met by a correspondinglyiless en- F r0111 thecharacter of the invention thus far set forth, it will be noted thatwhen the shuttle reaches the opposite box it shill be met by a shuttlechecking force corresponding with the energy of movement 01"", 1110-mentum of the sh'utl-la -aaad whether this be relatively small pr greatthe shuttle will always enter the box to the desired extent and beproperly positioned therein without rebound. it will also be noted thatthe force of the checking-action decreases gradually' as thelay movesfrom its'rear toward frond position and whether the shuttle enters thobox early 01' late, due to its varying energy of movement under varyingconditions in the effective picking action, itwill be proprly receivedby and stopped in proper position in the shuttle box. .When the pressurearm rises under the lifting action of the shuttle checking-pressuretransmitter any overthrow. or excessive rising movement of the pressurearm is overcome and cushioned 'by the spring on the rod 35. j

It becomes desirable at times to regulate the checking action-upon theshuttle, even though the present device insures proper boxing of theshuttle regardless of the efiectirecnergy of the pick. To effect this inlooms heretofore it was necessary for the loom fixerto stop the loom andadjust the walls of the shuttle box, the picker strap, or other part,and then'st-art the loom and observe the efiectof his adjustment.present device, however, this is unnecessary because by adjusting therod 35, which can be done while the loom is operating, the action of theshuttle check can be regulated to suit theruuning condition of the loom.The under surface'of the pressure arm preferably formed with aridingportion 41 to engage andride'upon the roll 32 during that portionof thelay movement when the In the picking action. of the shuttle mustbe commenced and completed, so that as the lay moves back and during thetime the shuttle is to start on its excursion, the actionof the pressurearm 15 at first least and then graduallylncreases until 1t reaches amaximum at the rear position of the lay. 'lhenas the lay;

starts forward the action. of the pressure arm gradually becomes lessand less, until at the expiration of the time when the shuttle must havecompleted its excursion, the roll 32 passes from contact- With thepressure arm and the shuttle is held in the box by the light pressureof. the binder.

arm 27, hanger 30 and the light spring acting on the protector rod. Thuswhen the shuttle is finally boxed it is lightly held, so that in-afilling replenishing loom it maybe moved, it necessary, by the incomingcar- This light pressure may be secured by the weight of the.

rier to properly receive the base of the bobbin between the usualholding jaws of is generic in character and not restricted.

thereto; and eliective operation of the invention will be secured thoughthe parts and their relation may be variously changed or modified. F orinstance, the lmoclooli device \might be otherwise operated or thebinder might be otherwise arranged and disposed. It has not been deemednecessary to specitioally mention the various causes which influence ormodify the picking action and I carries variations. in the moving energyor momentum of the-shuttle and its consequent arrival in the oppositebox at different po sitions of lay movement and with dilieront degreesof energy, as these matters are well understood by those familiar withthe art,

and the present invention acts to secure the ends stated irrespective ofthe cause of such variations.

Flhat is claimed is:

1. In a shuttle checking mechanism for looms, the combination of the layand shuttle boxes, means for engaging the shuttle to check as itenters ashuttle box, means acting through said engaging means to ex ert upon theshuttle a maximum checking action when the lay/Is in extreme rearposition and a progressively decreasing checking actionas the laymovesfrom said extreme rear to front position, and a device for varyingthe maximum and progressively decreasing action of. the. shuttlechecking means during the operation of the loom.

-2. In a loom, the combination of the lay and shuttle boxes, a shuttlechecking device carried by, the lay, a lever pivotally con- ,iiected tothe loom frame and acting through saiddevice with varying leveragethereon in d fferent positions of the lay'to exert maximum checkingenergy when the lay is in back position and decreasing checking energyas the lay-moves forward.

- 3. In a loom, the combination of a lay and shuttle boxes, a shuttlechecking device', means including a lever cooperating therewithandacting therethrough with a maximum;checking action when the lay is inback, position and to vary the checking energy of said device in adecreasing ratio corresponding to the picking energy of the shuttle asthe "lay moves forward, and an. adjusting device adjustable during theoperation of the loom for regulating the checking action of said means.Y

4. In a shuttle checking mechanism for looms, the combination of theylay and shuttls boxes, a shuttle checking device to check the shuttle asit enters a shuttle box, and a lever pivoted to the machine frame at arear portion thereof and projecting toward the front of the loom, saidlever acting through said device with varying leverage all-differentpositions of the layand exerting a maximum checking energy when the lay;is in back position and gradually de creasing said checkingv energy asthe lay moves forward.

5.. In, a loom, the combination'of a lay, shuttle boxes having binders,means cotiperating therewith to exert a maximum,

checking energy upon the binders when the lay is in back position and tovary the checkingenergy of said binders in a decreasing ratiocorresponding to the picking energy or momentum of the shuttle as thelay moves forward,-and an adjusting device at the front of the loom forregulating the checking action of said binders during the operation ofthe loom. I

6. In a loom, the combination of a lay and shuttle boxes, means foracting on theshuttle to check the same, a lever pivotally mounted on theloom frame. and adapted to act with varying leverage through said meansfrom a maximum when the lay is in rear posit-ion, and means connectedwith the free end of said lever for regulating-its ac to the loom frameat a fixed point and adapted to bear on said part or hanger with maximumleverage when the lay is in back position and with decreasing leverageas the lay moves'forward.

8. In a -loom, the combination of a lay and shuttle box, a binder forsaid box to act upon the shuttle, a shuttle checking-pressuretransmitter engaging said binder, a pressure arm pivoted to the loomframe back of the rearmost positioirr of the lay andacting' upon saidtransmitter with maximum pressure when the lay is in rearmost positionand to vary the pressure of, the binder on the shuttle-in a decreasingratio as the lay moves forward, and a device for. adjusting theaction'of the pressure arm during the operation of the loom.

9. In a loom, the combination of a lay and shuttle box, a binder forsaid box, a shuttle checking-pressure transmitter mounted onthe lay andengaging the binder, and a pressure arm mounted on .the loom frame withits free end toward the front of the loom and acting on the transmitterto vary the pressure on .the binder in a decreasing ratiocorresponding'to the picking energy of the shuttle as the lay moves forward, and means connected with the free end of said pressure arm to varyits pressure upon the transmitter. Y

10. In a loom, the combination of a lay and shuttle boxes, meansforacting on the shuttle to check the same, a lever pivoted to the loomframe and adapted to act upon the shuttle with varying leverage throughsaid" means from a maximum with the lay in rear position,means'connected to the free end of said lever adjacent the front of theloom for adjusting the action of said lever during the operation of' thelofi'm.

In testimony whereof, we havesigned our CLARE H. DR'APER/ Jonasnonrnnor. I

' iitnessesq- WnnonLL WILLIAMS,

BEii'rHA I.- SNARE.

